Re: Kind of OT - Books on software development?
On May 25, 11:45 am, Ed Keith e_...@yahoo.com wrote: I do not have my library with me, but I remember a book that fits the bill exactly, is was from Microsoft Press, I think it was called Writing Solid Code Hope this helps, -EdK Ed Keith e_...@yahoo.com Blog: edkeith.blogspot.com --- On Wed, 5/25/11, Matty Sarro msa...@gmail.com wrote: From: Matty Sarro msa...@gmail.com Subject: Kind of OT - Books on software development? To: Python list python-l...@python.org Date: Wednesday, May 25, 2011, 11:40 AM Hey everyone, I am looking at some projects coming up, which may or may not involve python. So I figured I would throw the question out there and see what everyone thinks. I am looking for some books on software engineering/development... something that discusses techniques from ideation, up through testing, QA, production, and then maintenance. Is there such a book? -Matthew -- http://mail.python.org/mailman/listinfo/python-list- Hide quoted text - - Show quoted text - If you are talking about general concepts in efficient, effective OO programming I'd suggest Smalltalk Best Practice Patterns by Kent Beck. I've developed in Java, C#, Python, Ruby, Smalltalk, and other languages and this book is an eye opener! -- http://mail.python.org/mailman/listinfo/python-list
Re: Networked Broadcast Messaging
On Aug 11, 2:14 pm, squishywaf...@gmail.com squishywaf...@gmail.com wrote: I'm not exactly sure what the term for this would be, but I was wondering if there were any Python packages that supported some kind of ad-hoc message broadcasting. What I'd like to do is something like this: * On a number of workhorse machines, a process listens for network messages from our broadcast service. It subscribes to a certain sub- set of them and will only respond to the messaging events that it is subscribed to. * Any machine can broadcast a message out to the network of machines without specifying an IP address. * Machines can come and go. Since messages are not directly sent to a specific IP address from our Python script, the messages are simply broadcasted to those who are there to listen. If nobody is subscribed to the message type being sent, nothing happens. I know XML-RPC and other friends are an option, but I'm looking for something that doesn't require managing a set of IP addresses or hostnames. I'm not sure what to Google for such a package/module, any direction would be greatly appreciated. Offhand I'd suggest binding a specific UDP port on the listening workstations. Then the broadcasting workstation(s) could just pull a standard list of IP's based on its own subnet. Then there'd be no hard- coded machine names or IP addresses to manage. Just send the message to all hosts on the same subnet as the broadcaster(s). Plus the UDP connection would be stateless and not care if the receivers actually got the message or not... -- http://mail.python.org/mailman/listinfo/python-list
Re: Eclipse/PyDev question.
On Aug 3, 10:58 am, king kikapu [EMAIL PROTECTED] wrote: Hi, this is actually a question to those of us who use Eclipse and Pydev as their main Python developing environment. As i use Eclipse (3.3 Europa) only for Python and i have nothing to do with Java, is there a way to disable/uninstall some Java-specific stuff and make the environment actually more snappy ?? thanks for any help I've used Eclipse for Java, Python, and Ruby development and can say that AFAIK Eclipse and snappy are contradictions. Like jumbo shrimp :-/ -- http://mail.python.org/mailman/listinfo/python-list
Re: i am new to python-Please somebody help
On Aug 2, 8:51 am, Steven D'Aprano [EMAIL PROTECTED] wrote: On Thu, 02 Aug 2007 09:31:43 +, cool.vimalsmail wrote: [snip] You would be better off actually writing a sensible subject line instead of grovelling. Subject: How to use gzip in Python? [beginner] Then, having written a good subject line, it might have suggested a good search string for Google: gzip python http://www.google.com.au/search?q=gzip+python The first two links found will answer your question. -- Steven. This link answers my question -- http://www.google.com/search?hl=enq=Python+list+rudeness. Honestly, I have developed in both Ruby and Python for years now and have consistently found that the Ruby community if more newbie- friendly than Python's. Your points are well-taken in how to properly post and how to do your own homework. Message correct. Delivery lacking... -- http://mail.python.org/mailman/listinfo/python-list
Re: i am new to python-Please somebody help
On Aug 2, 12:58 pm, Terry Reedy [EMAIL PROTECTED] wrote: gregarican [EMAIL PROTECTED] wrote in message news:[EMAIL PROTECTED] | friendly than Python's. Your points are well-taken in how to properly | post and how to do your own homework. Message correct. Delivery | lacking... Sorry, I saw nothing rude in Steven's straightforward and indeed polite suggestion. Your post, however, tjr Maybe it's just me but the word grovelling just doesn't ring of newbie friendliness. To each their own I guess. Kind of like the Smalltalk list where a few respondents are really dry. Someone will post asking something like Can I use Smalltalk to do X so that it talks to Y? One guy (without pointing to a link or offering a snippet) just posts Yes. I guess literally they have contributed. Or someone calls your house and asks, Is so-and-so there? You just say Yes and hang up on them :-) -- http://mail.python.org/mailman/listinfo/python-list
Re: i am new to python-Please somebody help
On Aug 2, 11:03 am, Bruno Desthuilliers [EMAIL PROTECTED] wrote: gregarican a écrit : (snip) This link answers my question --http://www.google.com/search?hl=enq=Python+list+rudeness. I seriously don't think that this newsgroup can be qualified as rude (and I'm possibly one of the rudest persons here). Compared to most comp.* newsgroup, Python is certainly one of the most tolerant and newbie-friendly around - and quite a lot of newcomers say so. FWIW, even FAQs, RTFMs or STFWs are usually expressed in a mostly polite way, and almost always with links and pointers (and FWIW, it's the case here). Honestly, I have developed in both Ruby and Python for years now and have consistently found that the Ruby community if more newbie- friendly than Python's. I spent sometimes lurking on c.l.ruby and didn't find it *that* friendly. Not more than c.l.py at least, and certainly less respectful of peoples coming from other languages... Now if you want some examples of definitively rude newsgroups, I suggest you take your chance on other newsgroups in the comp.* hierarchy... Good points. I guess I read a little too much into things. Apology extended. I do recall when I was learning Python most of my questions weren't crushed or anything. And I hear you about some of the other comp.* lists. Browsing them awhile back I was left with my jaw open thinking, Oh no he diiint. -- http://mail.python.org/mailman/listinfo/python-list
Re: Where do they tech Python officialy ?
On Jul 24, 6:57 am, NicolasG [EMAIL PROTECTED] wrote: Why would you want to become a programmer? Programmers smell bad, they have no social life, they get treated like crap by everyone. They can get paid pretty well but then they spend all the money on useless electronic junk so they still live like bums. I wouldn't call this person programmer , I would call him a geek ;) one reason to be a programmer, which is that the drive to program burns in you like a fire. But in that case don't ask how to become a programmer, because you are already one, so welcome to the ranks ;-). Yes true , I'm already a programmer.. doing technical support for my company products in a call center. I hate my job, I hate the moment I have to wake up to go work ! I hate that moment I have to go sleep when I think of the next working day morning. Python is what I like, I would love to be more creative with this language and be able to produce things that I can't right now.. Why not try to find a work that you would like ? I don't want to work as a programmer to became one because I'm already a programmer, I just want to work as a programmer .. You sound like Peter from Office Space. Each day is the worst day of his life. Hypnotherapy...Python. What's the difference :-) -- http://mail.python.org/mailman/listinfo/python-list
Re: Regular Expressions
On Feb 10, 6:26 pm, Geoff Hill [EMAIL PROTECTED] wrote: What's the way to go about learning Python's regular expressions? I feel like such an idiot - being so strong in a programming language but knowing nothing about RE. I highly recommend reading the book Mastering Regular Expressions, which I believe is published by O'Reilly. It's a great reference and helps peel the onion in terms of working through RE. They are a language unto themselves. A fun brain exercise. -- http://mail.python.org/mailman/listinfo/python-list
Re: why would anyone use python when java is there?
I would recommend learning one language out of each of three potential groups. Just my $0.02 USD: 1) Larger commercial languages - Java, C++, C#. 2) Fun, productive scripting languages - Python, Ruby 3) Academic languages - C, Lisp, Haskell, Smalltalk This doesn't mean that Python can't be a larger commercial language, or that C is only used for teaching purposes. Perhaps these are too broad of generalizations. But these are three different areas of interest and having at least one language under your belt in each area would look good on a resume. Of course learning _how_ to program in practice is of huge importance. There are lots of books out there which give examples in several different languages of how to apply theoretical concepts to your craft. Although all of these languages aren't inherently object oriented you can apply such concepts to them to one degree or another to make your problem solving a little more practical and logical... Stephen Eilert wrote: If you are serious about getting a programming career, you should not be afraid to learn both Java and Python, perhaps C, Ruby, Lisp. They are tools, and more knowledge never hurts. -- http://mail.python.org/mailman/listinfo/python-list
Re: why would anyone use python when java is there?
He trolls other groups as well. Smalltalk for example -- http://groups.google.com/group/comp.lang.smalltalk/browse_thread/thread/1c83e576be824633/927227555661a2cd?lnk=gstq=gavinornum=1#927227555661a2cd. There are at least a dozen recent posts where he asks some obvious trollling line of questioning... Adam Jones wrote: gregarican wrote: gavino wrote: wtf You have to be trolling I would think. Yeah, gavino has been trolling comp.lang.lisp for quite some time. For the life of me I can't understand why he would troll comp.lang.python when comp.lang.lisp is there. -Adam -- http://mail.python.org/mailman/listinfo/python-list
Re: why would anyone use python when java is there?
gavino wrote: wtf You have to be trolling I would think. For most people I think they would like to code in Python if they had a personal choice. But for professional reasons they are likely forced to code in Java because of the sheep mentality of the large corporate drone-dom that's out there. To me, languages such as Smalltalk, Python, and Ruby allow the problems to solve themselves in code that's easier to read and requires less verbiage. Meanwhile all of Java's semicolons, curly braces, and syntactical hoops leaves my fingers tired and my eyes crossed. -- http://mail.python.org/mailman/listinfo/python-list
Re: IDE
For my tastes I like ActiveState's Komodo for a Python IDE. Eclipse is too bloated, slow, and is like a Tower of Babel. From what I've seen of SPE it seems good, although the download website seems to throw a lot of pop-up adware/spyware installs at you... giuseppe wrote: What is the better IDE software for python programming? many thanks joe -- http://mail.python.org/mailman/listinfo/python-list
Re: Python/UNO/OpenOffice?
That's what I would imagine. Kind of like calling some Microsoft Office COM/OLE methods in a wrapper. As long as the wrapper has most of the methods you need and the core COM/OLE calls don't change then that's a great start. Gary Herron wrote: [EMAIL PROTECTED] wrote: Are then any currently active and reasonably mature Python plugins/ apis/whatever for programming/scripting OpenOffice? The page I've found is http://udk.openoffice.org/python/python-bridge.html, but it was last updated more than a year ago. Thanks, Ken I don't believe that information is out-of-date. I use the python-bridge with the OpenOffice version 2.0.3 quite successfully. In my case I open a spread sheet and search around for and extract various values. It works just fine for me. Gary Herron -- http://mail.python.org/mailman/listinfo/python-list
Re: Talking to marketing people about Python
Lots of folks have pointed out large scale Python success stories ranging from NASA to Google to Amazon. Such companies should make for good PHB fodder in your argument. Most likely if the product manager is just a drone you can throw in some other acceptable norm. Since IronPython and Microsoft's .NET CLR are bound you can state that Python is a language that runs on .NET. Kind of like another language I work with when I get a chance. I like Smalltalk and there's a variant that runs in the new Microsoft Vista WPE environment (http://vistascript.net). If this was a mature option and if I was to pitch this to a PHB or some other corporate tool I would classify Smalltalk as an option that sits atop the cutting edge Microsoft WPE framework. These in-routes seem to be ways that dynamic/scripting/fringe languages are gaining traction in larger organizations. Just wrap them up into a Java VM, .NET CLR, etc. and off you go :-) Roy Smith wrote: I'm working on a product which for a long time has had a Perl binding for our remote access API. A while ago, I wrote a Python binding on my own, chatted it up a bit internally, and recently had a (large) customer enquire about getting access to it. I asked for permission to distribute the Python binding, and after a few weeks of winding its way through the corporate bureaucracy I got an email from a product manager who wants to meet with me to understand the market demand for Python API before we commercialize it. Can anybody suggest some good material I can give to him which will help explain what Python is and why it's a good thing, in a way that a marketing/product management person will understand? -- http://mail.python.org/mailman/listinfo/python-list
Re: Python/UNO/OpenOffice?
Just because the last code update was a little over a year ago doesn't mean the UNO project is dead. If the OpenOffice API has remained basically the same since UNO was last updated and the Python wrappers are relatively comprehensive then it should fit the bill. Googling around the UNO project was the only thing I found off-hand as well... [EMAIL PROTECTED] wrote: Are then any currently active and reasonably mature Python plugins/ apis/whatever for programming/scripting OpenOffice? The page I've found is http://udk.openoffice.org/python/python-bridge.html, but it was last updated more than a year ago. Thanks, Ken -- http://mail.python.org/mailman/listinfo/python-list
Re: Pros/Cons of Turbogears/Rails?
As I read in another post on this thread, do some initial scoping out of either framework and pick the one that seems to suit your way of thinking/coding the best. If you scan over some sample code on the projects' websites you should get a basic idea of what they will be like. Although a bit more obscure than the two frameworks you are considering, have you checked out Seaside (http://seaside.st)? It's a Smalltalk framework that interests me personally. I've had the opportunity to check it out briefly, but haven't had a chance to actually mock up an app using it. If you check it out as well as a neat AJAX library that can overlay it called Scriptaculous (http://script.aculo.us) you can do some pretty slick things concisely. I doubt that something like this will immediately skyrocket to the top of the commercial developer's hit list, but it is something that I would play around with since it will only expand my knowledge base. And I can have fun while doing it :-) Out of what I've seen working with Rails and checking out TurboGears I chose Rails since it fit in with my way of thinking the best. Everyone has their own taste so I wouldn't take any one person's (or one group's) opinion. Read up on them a bit and see which one looks the most interesting to you. [EMAIL PROTECTED] wrote: First, I don't intend this to be a flame war, please. Python and Ruby are the only two languages I'd willingly work in (at least amongst common languages), and TurboGears and Rails seem roughly equivalent. I'm much more knowledgable about Python, but that's a minor issue--I've been intending to learn more Ruby anyway. Here are the pros and cons that I'm aware of and consider important: Turbogears: + SqlObject allows working with the DB tables without using SQL itself. + Likely to be faster because as far as I'm aware, Python is significantly faster. + Easy access to other libraries (such as the Python Imaging Library) that Ruby, being a relatively newer language, doesn't have equivalents to. + Built-in default SQLite makes it easier to set up? (as far as I can tell, Ruby requires MySql by default--don't know how easy this is to change.) + I find the templating system somewhat cleaner; code in py: xml namespace allows pure .html templates, instead of equivalent of .rhtml files. Ruby: + More mature system. More stable? More features? + Much better documented. This is a biggie. + Built-in Rubydoc system would make documenting the system easier. (IMHO, developers almost always underestimate the need for good documentation that is written along withe the system.) Is there a Python doc system that has received Guido's blessing yet? D'oxygen would seem an obvious choice. + Better coordination with Javascript helper code? I was initially leaning towards Rails due to maturity, but the most recent version of TurboGears seem to have fixed a lot of the ad hoc feeling I got from previous versions. But I'm still very much up in the air. Thanks, Ken P.S. If I wanted to provide an image by streaming the file data directly over the connection, rather than by referring to an image file, how would I do that? I'd like to build code that would allow images to be assembled into a single-file photo album (zip or bsddb file), and so can't refer to them as individual image files. -- http://mail.python.org/mailman/listinfo/python-list
Re: Which KDE IDE for Python?
SPE looks good. I've used Komodo for about a year or so but am considering giving SPE a try. All of the malware/spyware/adware that was attempting to load on my system when I visited the SPE website wasn't so good, however :-/ crystalattice wrote: Bart Ogryczak wrote: Hi, Rigth now I'm using two IDEs for Python, KDevelop and Eric. Both have drawbacks. KDevelop is a multilanguage IDE, and doesn't really have anything special for Python. There's no Python debugger, no PyDOC integration, it's class browser doesn't display attributes. On the other side there's Eric, which is made just for Python. But.. it doesn't integrate with KDE, doesn't support remote files (fish://, ftp:// etc.). Does anyone know a better IDE for Python, that'll integrate nicely with KDE? You might try SPE (http://stani.be/python/spe/blog/). I don't know if it integrates w/ KDE but it's expressly for Python. From the site: Spe is a free python IDE with auto indentation completion, call tips, syntax coloring highlighting, UML diagrams, class explorer, source index, auto todo list, sticky notes, pycrust shell, file browsers, dragdrop, context help, Blender support, ... Spe ships with Python debugger (remote encrypted), wxGlade (gui designer), PyChecker (source code doctor) and Kiki (regex console). -- http://mail.python.org/mailman/listinfo/python-list
Re: Need a compelling argument to use Django instead of Rails
Bruno Desthuilliers wrote: Please define security. I fail to see how language-inforced access restriction (and mandatory declarative static typing etc) relates to 'security'. As far as I'm concerned, security is about protecting a system from piracy, not about inflicting useless pain to programmers. I must agree here. When I am coding I appreciate ease of referencing things above and beyond a language tying my hands behind my back supposedly in the name of security. If I am savvy enough and know what I am doing I can create classes, methods, etc. that implement an effective security model in terms of encapsulation and hiding. But there are times that I am creating something that I don't want boxed in by the language enforcing all of this for me. It's like when people dismiss PHP as a supposedly insecure language. It's more a problem of too many newly initiated PHP developers not using techniques they should be to create secure applications. -- http://mail.python.org/mailman/listinfo/python-list
Re: Need a compelling argument to use Django instead of Rails
I would suggest trying to pick up Ruby. Knowing both Python and Ruby has helped me in that I can choose whichever tool is the best fit. There are certain cases where I have to abandon Ruby for a certain project because the library isn't mature enough or cross platform enough for my requirements. So coding in Python is my option. Then again there are other things where I am able to choose Ruby as the best fit because of other concerns. The languages are different, but not _that_ different. If you can get past the initial Perlishness (is that a word?) of Ruby you will find that going from one language to the other isn't that huge of a jump. Damjan wrote: Nah, we're not interested in Python. This is a hard attitude, but I have the same feeling about Ruby, I like Python and just don't see a reason to invest any time in Ruby (Rails or not).. and from that little I've seen from it.. I didn't like it. OTOH Ruby surelly is not that bad either. -- damjan -- http://mail.python.org/mailman/listinfo/python-list
Re: Need a compelling argument to use Django instead of Rails
Ray wrote: The lack of support for Oracle and SQL Server by Django is also a killer that'll prevent Django from being picked up by a LOT of companies (sadly, including mine :( ). Uh, yeah. I was aware of Django but haven't had the time to delve into it. If it doesn't support these larger scale database server types that would indeed throw a red flag up in certain environments. What all types doesn't it support? MySQL, PgSQL, SQL Lite, Pervasive SQL? I know. I haven't made Google my friend and haven't STFW :-/ -- http://mail.python.org/mailman/listinfo/python-list
SOAPy Question
I apologize in advance for not googling in depth enough :-) I am looking for use Python's SOAP implementation to pull some retail pricing data for a work project. Our Internet access goes through an authenticating proxy server. Can I access information in this scenario using SOAPy? I have seen cases where the SOAP service requires authentication and various SOAP implementations account for this. But I am looking to specify the proxy server authentication to even get out to the external SOAP service. Will this be doable? -- http://mail.python.org/mailman/listinfo/python-list
Re: SOAPy Question
Please disregard, as I googled my way to the answer. I used SOAPProxy to specify the information I needed to get out to the external SOAP service. All is well and away we go :-) gregarican wrote: I apologize in advance for not googling in depth enough :-) I am looking for use Python's SOAP implementation to pull some retail pricing data for a work project. Our Internet access goes through an authenticating proxy server. Can I access information in this scenario using SOAPy? I have seen cases where the SOAP service requires authentication and various SOAP implementations account for this. But I am looking to specify the proxy server authentication to even get out to the external SOAP service. Will this be doable? -- http://mail.python.org/mailman/listinfo/python-list
Widestudio Users?
Just curious if anyone out there uses Python programming in the Widestudio (http://www.widestudio.org) GUI IDE toolkit. I have looked into it when running into some portability limitations trying certain GUI tookits for Ruby, but couldn't get immersed into Widestudio. Since I use Python as well I was wondering if Pythonistas have given this a shot. Off hand the widgets look a bit old and ugly, but from a portability and language support standpoint it has still been on my radar. This GUI IDE toolkit comes with support for Ruby, Python, Perl, and other languages and looks like an effective catch-all, as its bundled applications can run on Windows, Linux, Windows Mobile, Embedded Linux, *BSD, Mac OS, etc. But it's primarily geared for a Japanese audience from the looks of it. There are some books out there for it, but there are all on Amazon.Com.Jp and don't have English translations available. Anyone? -- http://mail.python.org/mailman/listinfo/python-list
Re: Python for Embedded Systems?
Here's an URL to a project that appears to be dated from 2004 -- http://skreak.com/wrt54g/python.php. Jack wrote: Is there a Python packaging that is specifically for embedded systems? ie, very small and configurable so the user gets to select what modules to install? For Linux-based embedded systems in particular? I'm thinking of running it on the Linksys's Linux-based open source router WRT54G. It has 4MB flash and 16MB RAM. I think another model has 16MB flash. Any possibilities of running Python on these systems? If Python is not the best candidate for embedded systems because of the size, what (scripting) language would you recommend? PHP may fit but I don't quite like the language. Anything else? Loa is small but it does not seem to be powerful enough. -- http://mail.python.org/mailman/listinfo/python-list
Re: Python for Embedded Systems?
Or Python on the Zaurus, which I used to develop a wifi CRM app on a group of refurb Sharp Zaurus SL-5500 units. Here's a link to the Python implementation on the Z -- http://starship.python.net/~hinsen/Zaurus/. Grzegorz Makarewicz wrote: Jack wrote: Is there a Python packaging that is specifically for embedded systems? ie, very small and configurable so the user gets to select what modules to install? For Linux-based embedded systems in particular? I'm thinking of running it on the Linksys's Linux-based open source router WRT54G. It has 4MB flash and 16MB RAM. I think another model has 16MB flash. Any possibilities of running Python on these systems? If Python is not the best candidate for embedded systems because of the size, what (scripting) language would you recommend? PHP may fit but I don't quite like the language. Anything else? Loa is small but it does not seem to be powerful enough. python on palmos - latest version was below 1.5.2 - but is quite interesting has small fotoprint, is fast and usefull but isn't maintained by years mak -- http://mail.python.org/mailman/listinfo/python-list
Re: first book about python
Once you are ready to take the plunge another good document is the Python tutorial written by Guido Von Rossum himself (http://docs.python.org/tut/). It's not a full fledged 300 page manifesto but it's covers the basic of the language. IOANNIS MANOLOUDIS wrote: I guess it's better to wait for the for dummies book. I should focus instead in taking the LPIC-2 exams in September. Ioannis -- http://mail.python.org/mailman/listinfo/python-list
Re: first book about python
Learning Python, Perl, or Ruby would help you create admin scripts that would save you lots of manual work. For me automated log file alerting, SQL query parsing, SQL table updates, Internet file uploading/downloading, etc. has been a huge plus. Perl is likely the most widely used in terms of existing scripts that you can review, modify, borrow ideas from, etc. But from a long term maintainability and readability standpoint I would recommend Python or Ruby over Perl. Just my $0.02... IOANNIS MANOLOUDIS wrote: I thank everybody for your replies. I think I'll get Hertland's book since it's newer than O'reillys. I don't want to become a programmer. Neither Python is part of my studies. I've finished with my studies. I want to become a Unix/Linux admin and knowledge of either Python or Perl is an asset. Do you think that this book is the right one for me? Ioannis -- http://mail.python.org/mailman/listinfo/python-list
Re: first book about python
Try Learning Python which is part of the O'Reilly series of books they publish on computer programming. It's a good start. Most public library systems have copies you can check out, and most larger bookstores have it. Otherwise there's always Amazon.Com. Welcome to Python and enjoy! IOANNIS MANOLOUDIS wrote: I want to learn python. I plan to buy a book. I always find printed material more convenient than reading on-line tutorials. I don't know PERL or any other scripting language. I only know some BASH programming. I am looking for a book which will help me get started and should contain the foundations. I am not looking for the Python bible. Any recommendations? Ioannis -- http://mail.python.org/mailman/listinfo/python-list
COM Makepy Question
Using Pythonwin's COM Makepy utility I created a COM wrapper around an OCX file that's used to communicate with a magstripe card reader. The wrapper was created without incident and I can invoke any get type of method without a problem. But whenever I attempt to invoke any of the set type of methods I receive an error message that states: (-2147352567, 'Exception occurred.', (0, 'ctlUSBHID', 'Client Site not available', None, 1000398, -2146827890), None) Googling around I see that this error message indicates an ActiveX control that's being referenced without residing within a container. Not sure if this is something that I can fix myself within the Makepy COM wrapper or if I have to rely on the vendor shipping an updated OCX file. I did see a Python discussion thread where someone else ran into a similar problem and had to wait for the vendor to ship a revised OCX file. Dolphin Smalltalk has a similar COM wrapper utility and the same exact error occurs. The OCX file is ideally suited for Visual Basic but I don't have that compilation environment setup on my workstation to try out. Anyone familiar with such matters? I have contacted the vendor to try to initiate things on that end. But if there's something I can do to circumvent that route using Python I'd give it a go. -- http://mail.python.org/mailman/listinfo/python-list
Re: COM Makepy Question
Gotcha. That makes perfect sense looking at the container references others made during my Googling adventures. Thanks! Stefan Schukat wrote: It seems that the ocx only works in a GUI environment. Perhaps you could try to embed the ocx in a pythonwin dialog which you create invisible since the dialog is then a control container see Python24\Lib\site-packages\pythonwin\pywin\Demos\ocx\ocxtest.py Stefan -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of gregarican Sent: Friday, July 07, 2006 1:37 PM To: python-list@python.org Subject: COM Makepy Question Using Pythonwin's COM Makepy utility I created a COM wrapper around an OCX file that's used to communicate with a magstripe card reader. The wrapper was created without incident and I can invoke any get type of method without a problem. But whenever I attempt to invoke any of the set type of methods I receive an error message that states: (-2147352567, 'Exception occurred.', (0, 'ctlUSBHID', 'Client Site not available', None, 1000398, -2146827890), None) Googling around I see that this error message indicates an ActiveX control that's being referenced without residing within a container. Not sure if this is something that I can fix myself within the Makepy COM wrapper or if I have to rely on the vendor shipping an updated OCX file. I did see a Python discussion thread where someone else ran into a similar problem and had to wait for the vendor to ship a revised OCX file. Dolphin Smalltalk has a similar COM wrapper utility and the same exact error occurs. The OCX file is ideally suited for Visual Basic but I don't have that compilation environment setup on my workstation to try out. Anyone familiar with such matters? I have contacted the vendor to try to initiate things on that end. But if there's something I can do to circumvent that route using Python I'd give it a go. -- http://mail.python.org/mailman/listinfo/python-list -- http://mail.python.org/mailman/listinfo/python-list
Re: HTPPD eror on red hot linux
Ever read Flowers for Algernon? Just curious... donxfabio wrote: Help me Syntax error on line 189 of /etc/httpd/conf/httpd.conf: Cannot load /etc/httpd/modules/mod_unique_id.so into server: /etc/httpd/modules/mod_unique_id.so: ELF file's phentsize not the expected size Whats this? -- http://mail.python.org/mailman/listinfo/python-list
Re: what are you using python language for?
Wow that's serious Old School. Reminds me of way-back-when in Data Processing class we used VisiCalc on the old Trash-80's for spreadsheet work. Cut a notch in those 5 1/4 floppies and voila, you doubled your storage capacity :-) Dennis Lee Bieber wrote: On Thu, 08 Jun 2006 13:52:38 GMT, John Salerno [EMAIL PROTECTED] declaimed the following in comp.lang.python: Jason wrote: I've been working on an RPG character generator for consistent (yet varied) set of role-playing systems. Nothing like a pen-and-pencil RPG to throw in tons of special cases and strange rulesets. Sounds interesting. Something I've thought about as a project, but I'm not good enough yet! :) Many years ago I had the starship design tables from (first edition) Traveller incorporated into a Multiplan spreadsheet running on a TRS-80 Model 4 -- WulfraedDennis Lee Bieber KD6MOG [EMAIL PROTECTED] [EMAIL PROTECTED] HTTP://wlfraed.home.netcom.com/ (Bestiaria Support Staff: [EMAIL PROTECTED]) HTTP://www.bestiaria.com/ -- http://mail.python.org/mailman/listinfo/python-list
Re: 10GB XML Blows out Memory, Suggestions?
Am I missing something? I don't read where the poster mentioned the operation as being CPU intensive. He does mention that the entirety of a 10 GB file cannot be loaded into memory. If you discount physical swapfile paging and base this assumption on a normal PC that might have maybe 1 or 2 GB of RAM is his assumption that out of line? And I don't doubt that Python is efficient as possible for I/O operations. But since it is an interpreted scripting language how could it be just as fast as any language as you claim? C would have to be faster. Machine language would have to be faster. And even other interpreted languages *could* be faster, given certain conditions. A generalization like the claim kind of invalidates the remainder of your assertion. fuzzylollipop wrote: K.S.Sreeram wrote: Diez B. Roggisch wrote: What the OP needs is a different approach to XML-documents that won't parse the whole file into one giant tree - but I'm pretty sure that (c)ElementTree will do the job as well as expat. And I don't recall the OP musing about performances woes, btw. There's just NO WAY that the 10gb xml file can be loaded into memory as a tree on any normal machine, irrespective of whether we use C or Python. So the *only* way is to perform some kind of 'stream' processing on the file. Perhaps using a SAX like API. So (c)ElementTree is ruled out for this. Diez B. Roggisch wrote: No what exactly makes C grok a 10Gb file where python will fail to do so? In most typical cases where there's any kind of significant python code, its possible to achieve a *minimum* of a 10x speedup by using C. In most cases, the speedup is not worth it and we just trade it for the increased flexiblity/power of the python language. But in this situation using a bit of tight C code could make the difference between the process taking just 15mins or taking a few hours! Ofcourse I'm not asking him to write the entire application in C. It makes sense to just write the performance critical sections in C, and wrap it in Python, and write the rest of the application in Python. you got no idea what you are talking about, anyone knows that something like this is IO bound. CPU is the least of his worries. And for IO bound applications Python is just as fast as any other language. -- http://mail.python.org/mailman/listinfo/python-list
Re: 10GB XML Blows out Memory, Suggestions?
Point for Fredrik. If someone doesn't recognize the inherent performance differences between different XML parsers they haven't experienced the pain (and eventual victory) of trying to optimize their techniques for working with the albatross that XML can be :-) Fredrik Lundh wrote: fuzzylollipop wrote: dependes on the CODE and the SIZE of the file, in this case processing 10GB of file, unless that file is heavly encrypted or compressed will, the process will be IO bound PERIOD! so the fact that for token, node in pulldom.parse(file): pass is 50-200% slower than for event, elem in ET.iterparse(file): if elem.tag == item: elem.clear() when reading a gigabyte-sized XML file, is due to an unexpected slowdown in the I/O subsystem after importing xml.dom? I work with TeraBytes of files, and all our Python code is just as fast as equivelent C code for IO bound processes. so how large are the things that you're actually *processing* in your Python code? megabyte blobs or 100-1000 byte records? or even smaller things? /F -- http://mail.python.org/mailman/listinfo/python-list
Re: 10GB XML Blows out Memory, Suggestions?
10 gigs? Wow, even using SAX I would imagine that you would be pushing the limits of reasonable performance. Any way you can depart from the XML requirement? That's not really what XML was intended for in terms of passing along information IMHO... [EMAIL PROTECTED] wrote: I wrote a program that takes an XML file into memory using Minidom. I found out that the XML document is 10gb. I clearly need SAX or something else? Any suggestions on what that something else is? Is it hard to convert the code from DOM to SAX? -- http://mail.python.org/mailman/listinfo/python-list
Re: 10GB XML Blows out Memory, Suggestions?
That a good sized Goldmine database. In past lives I have supported that app and recall that you could match the Goldmine front end against an SQL backend. If you can get to the underlying data utilizing SQL you can selectively port over sections of the database and might be able to attack things more methodically than parsing through a mongo XML file. Instead you could bulk insert portions of the Goldmine data into SugarCRM. Know what I mean? [EMAIL PROTECTED] wrote: The file is an XML dump from Goldmine. I have built a document parser that allows for the population of data from Goldmine into SugarCRM. The clients data se is 10gb. Felipe Almeida Lessa wrote: Em Ter, 2006-06-06 às 13:56 +, Paul McGuire escreveu: (just can't open it up like a text file) Who'll open a 10 GiB file anyway? -- Felipe. -- http://mail.python.org/mailman/listinfo/python-list
Re: what are you using python language for?
Currently I am using Python for a CRM client application that runs on Win32, ARM Linux, and WinCE platforms. It pushes and pulls contact data using XMLRPC calls so that it doesn't lock the client into having to use CDO for communicating with the Exchange Server and ADO for communicating with the SQL Server. hacker1017 wrote: im just asking out of curiosity. -- http://mail.python.org/mailman/listinfo/python-list
Re: New to Python: Do we have the concept of Hash in Python?
I needed certain Windows specific libraries that were difficult to impossible to do in Ruby. For example the Qt toolkit, LDAP support, and a WinCE implementation. Python is more Windows-friendly so I ported certain apps over to Python since Ruby left me hanging in just those specifics areas. As for my preferred language I use Smalltalk, Ruby, and Python each about a third of the time depending on what I'm looking to accomplish. For quick admin scripts Ruby is my choice, but perhaps that's just because I learned it first :-) Sion Arrowsmith wrote: gregarican [EMAIL PROTECTED] wrote: I came from using Ruby about a year or so [ ... ] That's an interesting way round. Why did you consider Python if you already knew Ruby, and which is now your preferred language? (I've no interest in learning Ruby, but from what I've seen of it I similarly can't imagine what would motivate me to learn Python.) -- \S -- [EMAIL PROTECTED] -- http://www.chaos.org.uk/~sion/ ___ | Frankly I have no feelings towards penguins one way or the other \X/ |-- Arthur C. Clarke her nu becomeþ se bera eadward ofdun hlæddre heafdes bæce bump bump bump -- http://mail.python.org/mailman/listinfo/python-list
Re: New to Python: Do we have the concept of Hash in Python?
Lemme see, starting *and* finishing a project in a language you've never practically used before within a day's time? Sounds like a clip from next season's opener of the TV show '24' to me. I came from using Ruby about a year or so and even then it took a couple of days of browsing through the Python docs and playing around until I could consider myself somewhat useful. Coming from Java and C# might make the departure a little steeper. Good luck! A.M wrote: Fredrik Lundh [EMAIL PROTECTED] wrote in message news:[EMAIL PROTECTED] A.M wrote: I am new to Python, with C#/Java background that's not really much of an excuse for not reading *any* Python tutorial before you jump in... Hi Fredrik, 1st of all, I am really impressed by this Python community. Answers are helpful and I am having excellent progress. I appreciate everybody's help. This is my 1st day that I am seriously diving into Python and I have to finish this application by the end of today. Maybe it wasn't a good idea to choose the language that I don't know when I have to deliver my work in such short time. I understand that my question might seems very trivial to you, but please consider the fact that I am in time pressure and I cannot go through a 400 book today. I promises I'll do that this weekend ;) Wish luck for me! Thank you for your post, Alan -- http://mail.python.org/mailman/listinfo/python-list
Re: New to Python: Do we have the concept of Hash in Python?
We have sort of a problem here uh yeah (http://www.luminomagazine.com/2004.03/spotlight/officespace/images/lumbergh/lumbergh1.jpg)... Fredrik Lundh wrote: A.M wrote: This is my 1st day that I am seriously diving into Python and I have to finish this application by the end of today. Maybe it wasn't a good idea to choose the language that I don't know when I have to deliver my work in such short time. are your boss aware of this ? /F -- http://mail.python.org/mailman/listinfo/python-list
Re: New to Python: Do we have the concept of Hash in Python?
Dear A.M., The day is complete. My TPS reports still aren't on my desk. Either with or without cover sheets. Not a good time to try to teach yourself a new language. Please gather your belongings and move down to basement storage C. That'd be great, Bill Lumberg John Machin wrote: A.M wrote: The application is not mission critical system. It is just a simple reporting tool. Famous last words. -- http://mail.python.org/mailman/listinfo/python-list
Re: Python Programming Books?
I third this opinion. This book gave me a lot of insight and helped me get comfortable using Python. I also recall looking at a document Guido published on how to get started with Python as well as reading the reference docs that come bundled with the language install. Of course I came from a background of already using Ruby so the departure wasn't altogether difficult. The languages are different but to me they seem like cousins :-) Typically when I try to teach myself a new language, such as Python, Ruby, Smalltalk, Scheme, Haskell, etc. I check out my online catalog through my local library system. Usually I can find a couple of books to peruse. If I don't like them I can just drop them back off. Then I check out eBay for used books. This route was especially helpful for teaching myself Smalltalk, since a lot of the books were 10-20 years old so I picked them up for anywhere between $1.00 to $5.00. I digress. Learning Python by Mark Lutz is a thorough and complete introduction to what you need to know to get started. Even if you are coming into Python with no prior programming language exposure. John Salerno wrote: vbgunz wrote: Learning Python by Mark Lutz will be the most perfect book to get you started! Perhaps there are others aimed at the non-programmer but after getting through that book (2 times) I finally left it with wings... It is a great book for the n00b in my humble opinion. After that, you'll pretty much start flying higher on your own as long as you always keep the python docs handy along with the addresses to comp.lang.python and it's IRC channel #python on irc.freenode.net... Good luck, welcome to Python! I second this opinion completely. Use this book to start with! It is a wonderful intro to the language and will give you a solid foundation. As for waiting for a 3rd edition, don't do it! If you're like me, you'll want the latest there is, so I was tempted to start with something newer too (since this book covers up to 2.2), but honestly it covers everything you need to know. There are maybe two or three new additions that you can read about elsewhere, but Learning Python is THE book to start with, IMO. Get it now! :) -- http://mail.python.org/mailman/listinfo/python-list
Re: Tabs versus Spaces in Source Code
Peter Decker wrote: Funny, I was going to say that the problem is when the author prefers a font with a differntly-sized space. Some of us got rid of editing in fixed-width fonts when we left Fortran. Don't know what all of the hub-bub here is regarding tab/space indentation. My punched cards break down such matters as in quite fine fashion :-/ -- http://mail.python.org/mailman/listinfo/python-list
Re: basic python programing
Ravi Teja wrote: How To Ask Questions The Smart Way http://www.catb.org/~esr/faqs/smart-questions.html Actual the parent post on the thread wasn't asking a question. They were making a somewhat puzzling dangling statement. here we discuss the most basic concepts about python Where is _here__? The comp.lang.python newsgroup? In the poster's head? These are but a sampling of my own stoopid questions. -- http://mail.python.org/mailman/listinfo/python-list
Re: Tkinter vs PyGTK
JyotiC wrote: Thanx for the help. Does all gui's take time to load. is there a way to dec this time. Have you tried loading a Java GUI app through launching the Java Virtual Machine? That's pretty slow too. And that's a bytecode compiled medium. Unfortunately most interpreted programming languages like Perl, Ruby, Python, etc. are pretty slow loading initial GUI environments. That's the performance penalty that is offset by the benefits and efficiency of coding in a very high level language. Less than a second of load time doesn't seem to be too much of a detraction in my book, however. If you want pure speed you would need to code in a true compiled programming language such as C (e.g. - GTK GUI toolkit), C++ (e.g. - Qt GUI toolkit), etc. But what fun is that :-) -- http://mail.python.org/mailman/listinfo/python-list
Re: how relevant is C today?
bruno wrote: Err... And ? It's the snide, curt replies such as your recent ones in this thread that reinforce the generalization that the Python community can be rude. -- http://mail.python.org/mailman/listinfo/python-list
Re: how relevant is C today?
bruno wrote: Err... Even if Lisp is the father of functional programming, it is definitively not a 'pure' FPL. True. I couldn't referred to something like Haskell as being pure FP. My bad :-) -- http://mail.python.org/mailman/listinfo/python-list
Re: how relevant is C today?
Rune wrote: No. Simula is the original object oriented programming language. Thanks for pointing this out. I had read about references to Simula but never looked beyond the term itself. Interesting stuff. Especially since it was developed so long ago. Very interesting... -- http://mail.python.org/mailman/listinfo/python-list
Re: how relevant is C today?
Here are a few languages I recommend most programmers should at least have a peek at: 1) Smalltalk - The original object oriented programming language. Influenced anything from Mac/Windows GUI to Java language. Terse, clean syntax. IDE rolled into an operating system rolled into a set of core libraries. 2) Lisp - Along with FORTRAN, one of the oldest programming languages still in use. Pure functional programming model that is extensible and has many derivatives. Great for mathematical purposes. Easy to learn if you can get past all of the nested parenthesis :-) 3) C - The Latin of modern programming languages. Used in low level tasks (e.g. - hardware drivers) as well as larger projects (e.g. - operating systems and other programming languages). Logcal, explicit flow albeit a bit wordy. I have worked in C and Smalltalk for awhile now and just starting to pickup Lisp. Knowing different languages can help you approach problems with a fresh perspective. I prefer to code in Ruby and Python but can use these languages a certain way given the angles I have picked up elsewhere... -- http://mail.python.org/mailman/listinfo/python-list
Re: Is pwm Python MegaWidgets viable?
Paul Watson wrote: Does pwm run well on Python 2.4? The last release appears to be in 2003. The Manning discussion forum is dead. Is there a better path to learning and producing tkInter apps? Has there been any discussion of wxPython becoming part of the base Python distro? A requirement here is to not require download/install of anything other than the Python release. I can't vouch for Python 2.4, but I used the PMW library pretty extensively for an app that is based on Python 2.3. Tkinker itself offers most of the basic widgets that any Tk implementation does, and there's an online guide (can't recall the URL right now) to Tkinter that is great for an introduction tutorial. PMW is an add-on to Tkinter that is useful if there are specific widgets that you need that basic Tkinter doesn't provide and you don't feel like creating them from scratch. Just because it doesn't have a new release in the past couple of years doesn't mean that it's truly a dead project. Perhaps it's stabilized and there haven't been overwhelming requests for adding any new items to it. Using PMW won't help you learn Tkinter any quicker in any event. Just icing on the cake :-) -- http://mail.python.org/mailman/listinfo/python-list
Re: Is pwm Python MegaWidgets viable?
Paul Watson wrote: Many thanks for your reply. I was setting out to make use of the Manning book by Grayson. Perhaps I should just use online tutorial and such for learning plain-old tk first. However, I have heard good things about the book. Just trying to use what was already at hand. Here's the online tutorial that provides a basic introduction to Tkinter -- http://www.pythonware.com/library/tkinter/introduction/. I found it handy. I had used Tk implementations in other languages such as Ruby so I had already become familiar with the overall Tk toolkit, but nevertheless the online Tkinter tutorial was refreshing. Wasn't aware of the Manning book but it sounds like a great resource as well! -- http://mail.python.org/mailman/listinfo/python-list
Re: Can XML-RPC performance be improved?
Sion Arrowsmith wrote: shovel huge amounts of data That right there basically takes XML-RPC off the table as a viable solution. No matter how much fine tuning you try large amounts of data don't bode well using XML-RPC. The other posted alternatives are certainly worth a shot. From CORBA to cPickle to even a basic TCP socket connection would be more efficient. I have used XML-RPC for very small recordset transfers but I wouldn't use it for anything large. -- http://mail.python.org/mailman/listinfo/python-list
Re: Can XML-RPC performance be improved?
Skip wrote: I don't know about the OP, but in my case it was a drop-dead simple cross-language RPC protocol. Exactly. RPC implementations. Typically these are a quick do this with this sent from the client, with a brief okay, I did that, here's the result back from the server. Shovelling huge amounts of data using any XML encapsulation leads to a certain code smell at the very least. -- http://mail.python.org/mailman/listinfo/python-list
Python on an old NEC MobilePro 780
I have Python 2.3 with Tkinter working on a Dell Axim x50 (ARM Windows Mobile 5.0) and Python 2.3 with PyQt working on a Sharp Zaurus SL-5500 (ARM Linux Embedded). Now I purchased an NEC MobilePro 780 (MIPS Windows CE 2.11 Handheld PC 3.01). Any suggestions on the most recent Python and Tkinter implementations I can install on it? I tried an old Python 1.5 install for MIPS Windows CE and it seems to work okay. But finding a Tkinter implementation seems to be a little more difficult... -- http://mail.python.org/mailman/listinfo/python-list
Re: Getting .NET SDK to work with Python 2.4.2
Dave wrote: yea i have .net 1.1, but not the sdk. do i need the 1.1 SDK too? I think so. The .Net 1.1 runtime (i.e. - not the SDK) is missing the support files necessary for compiling programs. Gotta love those huge downloads. I thought the Java SDK's were big :-)~ -- http://mail.python.org/mailman/listinfo/python-list
Re: how to deal with socket.error: (10060, 'Operation timed out')
JuHui wrote: I wrote a script to get 100 pages from a server. like below: 1:import httplib 2:conns = httplib.HTTPConnection(www.mytest.com) 3:conn.request(GET, /) sometimes a socket error was raised. File D:\usr\bin\lib\httplib.py, line 627, in connect raise socket.error, msg socket.error: (10060, 'Operation timed out') how to catch this kind of error then retry the GET operation? You can use this below if you only want one retry --- import httplib conns = httplib.HTTPConnection(www.mytest.com) try: conn.request(GET, /) except: try: conns.request(GET, /) except: print I bombed out! # blah blah blah -- http://mail.python.org/mailman/listinfo/python-list
Re: Python Love :)
Paul Rubin wrote: reversed(a_string) (python) Which version of Python offers this function? It doesn't seem to be available in the 2.3 version I have installed... -- http://mail.python.org/mailman/listinfo/python-list
Re: Python Love :)
Paul Rubin wrote: Darn, yes, that's the second time in the past couple weeks I've made that exact same error in a clpy post. So what's the most concise way of turning it back into a string? ''.join(list(reversed(a_string))) ? Bleccch. Use Ruby: print A String.reverse Just kidding :-)~ -- http://mail.python.org/mailman/listinfo/python-list
Re: Python IDE: great headache....
Sullivan wrote: IDLE is no longer satisfactory for me. Other IDEs make me very confused. Really do not know which one to use. I use WinXP sp2 for current development. Personally I have gotten used to coding using ActiveState's Komodo. It doesn't get in my way and offers the basic features I am looking for. -- http://mail.python.org/mailman/listinfo/python-list
Re: Python Evangelism
rtilley wrote: It would be a smashing success. And I have an idea for a party game. It's called Jump to Conclusions. There would be a mat with all of these conclusions written down and... -- http://mail.python.org/mailman/listinfo/python-list
Timeout in xmlrpclib client call?
Looking at the docs for xmlrpclib I didn't see a way to pass a client call with an expressed timeout value. What is the easiest way to accomplish this? Do I have to tap into the underlying HTTP requests being sent? I want to build more try:except: error checking into my application and the app currently is blocking for the xmlrpclib client call. I could capture an HTTP connection timeout message or the like but was wondering if I could build something into the xmlrpclib call itself with a shorter timeout threshold. -- http://mail.python.org/mailman/listinfo/python-list
PyQt - multiple window instances?
I have an PyQt app were I need one of the windows to be able to be
opened more than one at a time. When I try to open it I only get one
instance at the same time. The main class is the QWidget() class with a
QGridLayout() displaying the various window components.
Is there a certain flag I need to set or different constructor I need
to use to allow the window to be opened more than one at a time?
Here's a brief snippet of the code that displays the window:
def new_showing(self):
This method creates a new contact showing record.
if self.flag == 'KNOWN':
try:
test_contact = self.entry_id
except:
QMessageBox.warning(self, Qt CRAM, There is no
contact record loaded.\nPlease select a contact record first.)
return
self.new_show_widget=QWidget()
self.new_show_widget.resize(240, 280)
self.new_show_widget.setCaption('Qt CRAM - Contact Showings')
# Define the Qt layout to be used for the window.
self.new_show_grid=QGridLayout(self.new_show_widget, 8, 2)
# bunch of widgets displaying stuff
self.new_show_widget.show()
--
http://mail.python.org/mailman/listinfo/python-list
Re: PyQt - multiple window instances?
The window isn't being created as a new class instance or anything. The main class is the application main window as a whole and this particular window is just part of that class. I have typed data into the window, then tried to open up a new window. But when I do the window where I have typed data disappears and is replaced by a new window that's blank. What's the easiest way to keep a reference to the old window? -- http://mail.python.org/mailman/listinfo/python-list
Re: PyQt - multiple window instances?
Diez B. Roggisch wrote: The window isn't being created as a new class instance or anything. Yes it is. QWidget() creates a new instance of QWidget. The main class is the application main window as a whole and this particular window is just part of that class. I have typed data into the window, then tried to open up a new window. But when I do the window where I have typed data disappears and is replaced by a new window that's blank. What's the easiest way to keep a reference to the old window? By putting it into a list for example? Diez Perfect! Thanks for the tip. That worked perfectly. -- http://mail.python.org/mailman/listinfo/python-list
Re: Jython on the Palm OS?
Khalid Zuberi wrote: While someone has recently done some work to get Jython working with J2ME (reference below), I think its targetted at Pocket PC class devices (CDC spec) as opposed to palm (CLDC as far as i know). http://thread.gmane.org/gmane.comp.lang.jython.devel/1826 Thanks for the link. Since my app isn't too complex I am going to try to deploy it using SuperWaba on the Palm OS. I downloaded an Eclipse plug-in for in and see there's an XMLRPC extension available for SuperWaba as well. This the communications method I use for my app so we'll see how it goes! -- http://mail.python.org/mailman/listinfo/python-list
Jython on the Palm OS?
I have completed recoding my CRM app into Python so that it will run on Win32, ARM Linux, and ARM Windows Mobile platforms. Now I am looking to try to roll it into the Palm OS platform. Since Pippy is based on an older version of Python than I am using for my other implementations I was thinking about using Jython. Would this be a viable option for the Palm OS platform? I installed IBM Websphere Everywhere Micro Environment on a test Palm Tungsten C I have, but didn't see this JVM listed on the Jython compatibility list. So I am heading down a blind alley I suppose? -- http://mail.python.org/mailman/listinfo/python-list
Re: Tkinter listener thread?
Eric Brunel wrote: There's in fact no need to check regularly if there's something in the Queue: the secondary thread can post a tk custom event to trigger the treatment automatically from within the main GUI loop. See here: http://minilien.fr/a0k273 Appreciate the suggestion. This further helps simplify things. So far so good getting the UDP listener to work well within Tkinter. This listener takes an incoming CTI screen pop of the caller ID and queries it against a CRM database to bring up the appropriate contact record if applicable. One of these days I need to port the CTI library over from Ruby into Python so I don't have to rely on a UDP socket connection and can just pass the data natively within Python. But this is a workaround until that day comes. Thanks again. I am very impressed with the Python community in terms of knowledge and helpfulness. It's made matters a lot easier for this particular Python newbie... -- http://mail.python.org/mailman/listinfo/python-list
Tkinter listener thread?
I have a Python UDP listener socket that waits for incoming data. The socket runs as an endless loop. I would like to pop the incoming data into an existing Tkinter app that I have created. What's the easiest/most efficient way of handling this? Would I create a separate thread that has the listener set a certain Tkinter variable if there is incoming data? Any suggestions would be tremendously appreciated :-) -- http://mail.python.org/mailman/listinfo/python-list
Re: Tkinter listener thread?
Grant Edwards wrote: Unless tk.createfilehandler isn't supported no Wni32 platforms?? Unfortunately that's the case. As of Python 2.3.4 under Windows XP the createfilehandler method isn't available. It's only for UNIX as Mac platforms AFAIK. Shame, as it would be relatively easy to implement. Instead I'll look to set/check some global flags to hopefully get things working smoothly. Using Qt it's so much easier. Some apps I used the QThread class, while others I just set as QTimer instance to run a regular background process :-( -- http://mail.python.org/mailman/listinfo/python-list
Re: Tkinter listener thread?
Steve Holden wrote: http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/82965 Thanks. I tried a variation of this Queue posting/Flag checking method and it worked to a tee. The problem was that my UDP socket query was blocking things so that thread was hanging everything up. So I used a socket timeout value along with a try: except: construction to query the socket for data. Now it's fine. -- http://mail.python.org/mailman/listinfo/python-list
CTI library interest?
As part of a project I'm trying to port to Python I am planning on moving a CTI library it relies on into Python code. Previously the overall project as well as the associated library were written in Ruby. Specifically the CTI library utilizes TSAPI/CSTA for linking telephone equipment with IP computer endpoints. For a glimpse into the Ruby version of the CTI library check out http://tsapi.rubyforge.org. Is anyone interested in assisting with the Python implementation of this CTI library? If you have access to a TSAPI/CSTA-compliant PBX system or can compile a CSTA simulator on a Linux box that's all you need to try out your code. Anyone want to pitch in? -- http://mail.python.org/mailman/listinfo/python-list
Tkinter Mouse Cursor
Checking a couple of examples I tried changing the Tkinter mouse cursor to indicate a busy state while my app is pushing/pulling xmlrpc data. It doesn't seem to make a difference as I don't notice the cursor actually change in the span of the 3-5 second transaction. I tried changing the cursor of the root widget, the toplevel widget, etc. all to no avail. Is there something really basic I'm overlooking? Is it enough to just change the state and that's it, or do I have to explictly refresh things? -- http://mail.python.org/mailman/listinfo/python-list
Re: Tkinter Mouse Cursor
Please disregard. I just issued an update() method call to refresh the GUI. This in turn displayed the proper mouse cursor that was being set with the config(cursor=xxx) method. -- http://mail.python.org/mailman/listinfo/python-list
Re: MSSQL LIKE and IN statements in ADO problem
Thanks. Please keep us posted. For some of my potentially exposed areas I was just doing regex lookups against the input parameter to filter out possible SQL injection keywords. Obviously not as elegant and efficient as using ADO parameters to strictly define the data that should be coming into the SQL statement. Playing around with the code you provided yesterday I had problems using an ADO parameter as a condition of the SQL LIKE statement. Not sure if that's an ADO limitation, a Python ADO limitation, or my relative ignorance :-) -- http://mail.python.org/mailman/listinfo/python-list
Re: MSSQL LIKE and IN statements in ADO problem
The IN statement logic is a good mind exercise if there are multiple
parameters that needed to be brought in. Below is the code that fixed
the LIKE statement logic where you needed an ADO parameterized query
used. Apparently the percent signs don't have to be referenced anywhere
in the code, as my tests ran successfully without them:
-
import win32com.client
from adoconstants import *
conn = win32com.client.Dispatch(r'ADODB.Connection')
conn.ConnectionString = Driver={SQL
Server};Server=(local);Database=myDB;Trusted_Connection=yes;
conn.Open()
if conn.state == adStateOpen:
print Connected to database...
else:
print Not connected!
exit
cmd=win32com.client.Dispatch(r'ADODB.Command')
cmd.ActiveConnection=conn
name = '@fname'
value = 'raj'
param=cmd.CreateParameter(name, adVarChar, adParamInput, 200, value)
cmd.Parameters.Append(param)
cmd.CommandText = SELECT first, last FROM myTable WHERE first like ?
cmd.CommandType = adCmdText
(rs, dummy) = cmd.Execute()
rowCount = 0
while not rs.EOF:
print rs.Fields('first').Value, rs.Fields('last').Value
rowCount=rowCount+1
rs.MoveNext()
print %s records returned. % rowCount
rs.Close()
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Re: MSSQL LIKE and IN statements in ADO problem
Raja Raman wrote: Hi Gregarican, Thanks for sharing your code. One needs to add the % signs if one wants to do wildcard searches using LIKE in the SQL server. Do as Roger and Steve suggested '%raj%', now you can find the names containing the word raj anywhere in the column. just value = 'raj' is only going to fetch you fnames that == 'raj' Originally my problem was using the LIKE statement itself. But I guess you already know. Duhhh on my part. A little behind the curve as I'm recouping from adult chicken pox. Coding from the sickbed isn't ideal I suppose :-) -- http://mail.python.org/mailman/listinfo/python-list
Re: MSSQL LIKE and IN statements in ADO problem
Can't you get rid of the Create Parameter part and directly pass along the value you are looking for? Something like... name = 'raj' cmd.CommandText= \ SELECT * FROM tb_name WHERE firstname LIKE %%%s % name This way the value of the name variable gets passed along when the CommandText method is invoked. BTW, this looks too painfully much like Visual Basic than Python :-) Just kidding (kind of) -- http://mail.python.org/mailman/listinfo/python-list
Re: MSSQL LIKE and IN statements in ADO problem
Sorry forgot to explain that with the string substitution stuff you can escape the percent sign by doubling it up. In my example I wanted to retain the leading percent sign before the value, in this case I wanted LIKE %raj to appear. So I doubled it up. That's why there are three percent signs in a row. The last one is the one associated with the string substitution for the name variable. Make sense? -- http://mail.python.org/mailman/listinfo/python-list
Re: MSSQL LIKE and IN statements in ADO problem
Steve Holden wrote: Now Google for sql injection vulnerability and tell us why this is a bad idea. The original poster didn't specify if they were writing production-level code on in Internet-facing server so I didn't exactly infer a context. You are correct in your statement. I was just pointing out how substitutions operate if they were indeed an option. -- http://mail.python.org/mailman/listinfo/python-list
Re: PDA Implementations
Mike Meyer wrote: On an unrelated topic, you might take a look at Symbian devices. They've released a version of Python 2.3 for it. mike Thanks for the information. That might be worth checking out for sure. My project might be slightly delayed. I'm 37 yo and am recovering from chicken pox. Having this at this age is a little more severe it seems :-( -- http://mail.python.org/mailman/listinfo/python-list
PDA Implementations
I am in the process of creating an app that runs on various PDA platforms. Currently I have it running on ARM Linux (Sharp Zaurus) and am starting to port it over to ARM Windows Mobile (Dell Axim). Using Python has made the task particularly easier and (dare I say it?) kind of fun. What about porting it over to Palm OS (Palm Tungsten)? Is it worth it in your collective opinion long-term? Checking Python releases targeted for Palm OS I see most of these are a little long in the tooth. For example Pippy uses Python v1.5 I believe. All of the projects targeted for Palm OS are great and extend Python's usefulness for sure. But what about their functionality on newer Palm OS releases such as the Tungsten's? I am mainly looking for xmlrpc calls being passed to an external server using wif-fi and using a widget set. Figuring I am locked into Palm's own widget set. Is it worth it to go to all of this trouble if Palm OS appears to be losing market share and new Palm hardware devices are running Windows Mobile? -- http://mail.python.org/mailman/listinfo/python-list
Re: PyQt calling an external app?
Giovanni Bajo wrote: You can also go the Qt way and use QProcess. This also gives you cross-platform communication and process killing capabilities which are pretty hard to obtain (see the mess in Python with popen[1234]/subprocess). You also get nice signals from the process which interact well in a Qt environment. -- Giovanni Bajo Good point. I don't think that this particular class is available with Qt 2.3.0, which is what I am using for my Sharp Zaurus and Win32 implementations of this app. Once I move up to the world of Qt 4 I will definitely look into this as an option for certain things. My next quest will be rewriting this app (again) so that it will run on Windows Mobile PDA's using Python and Tkinter for the GUI. Since all of the data pushes/pulls relies on XMLRPC it shouldn't be too daunting. Just need to present the data nicely :-) -- http://mail.python.org/mailman/listinfo/python-list
Re: (Fucking) Unicode: console print statement and PythonWin: replacement for off-table chars HOWTO?
Robert wrote: (windows or linux console) print u'\u034a' Traceback (most recent call last): File stdin, line 1, in ? File C:\PYTHON23\lib\encodings\cp850.py, line 18, in encode return codecs.charmap_encode(input,errors,encoding_map) UnicodeEncodeError: 'charmap' codec can't encode character u'\u034a' in position 0: character maps to undefined Are you certain that this is a valid unicode character? Checking other values (like \u0020 which is a blank space) seems to work okay. What does \u034A represent? -- http://mail.python.org/mailman/listinfo/python-list
Re: PyQt Access Violations
Phil Thompson wrote: What version of Qt? Phil It's version 2.3.0 non-commerical for Windows. My OS is Windows 2000 Professional SP4. Using this same version of Qt for a Ruby-based implementation of a similar app I didn't experience the access violation crashes when invoking the setCentralWidget() method. It's sporadic, as the crashes sometimes take 2-3 widget opens/closes to happen. Other times it takes more. Trying to debug the crashes the script never makes it past this method. Here's an excerpt from the Dr. Watson error log: function: QGList::findRef 39d2dd42 807c240800 cmp byte ptr [esp+0x8],0x0 ss:00c09513=00 39d2dd47 7407 jz QString::fromUtf8+0x8a (39d36850) FAULT -39d2dd49 8b4108 mov eax,[ecx+0x8] ds:00cd9f51=48001500 39d2dd4c 33d2 xor edx,edx 39d2dd4e eb06 jmp QString::fromUtf8+0x90 (39d36856) 39d2dd50 8b4110 mov eax,[ecx+0x10] ds:00cd9f51=48001500 39d2dd53 8b5114 mov edx,[ecx+0x14] ds:00cd9f51=48001500 39d2dd56 56 pushesi 39d2dd57 85c0 testeax,eax 39d2dd59 740e jz QString::fromLatin1+0xb (39d36869) 39d2dd5b 8b30 mov esi,[eax] ds:007ad4d8=00858340 39d2dd5d 3b742408 cmp esi,[esp+0x8] ss:00c09513= 39d2dd61 7406 jz QString::fromLatin1+0xb (39d36869) 39d2dd63 8b4008 mov eax,[eax+0x8] ds:012873be= * Stack Back Trace * FramePtr ReturnAd Param#1 Param#2 Param#3 Param#4 Function Name 0012F664 1E057D56 089FE908 00857948 0001 088FAAD0 !QGList::findRef 0012F6C8 0001 007A5234 00779288 !PyCFunction_Call -- http://mail.python.org/mailman/listinfo/python-list
Re: PyQt Access Violations
Phil Thompson wrote: What version of Qt? Phil It's version 2.3.0 non-commerical for Windows. My OS is Windows 2000 Professional SP4. Using this same version of Qt for a Ruby-based implementation of a similar app I didn't experience the access violation crashes when invoking the setCentralWidget() method. It's sporadic, as the crashes sometimes take 2-3 widget opens/closes to happen. Other times it takes more. Trying to debug the crashes the script never makes it past this method. Here's an excerpt from the Dr. Watson error log: function: QGList::findRef 39d2dd42 807c240800 cmp byte ptr [esp+0x8],0x0 ss:00c09513=00 39d2dd47 7407 jz QString::fromUtf8+0x8a (39d36850) FAULT -39d2dd49 8b4108 mov eax,[ecx+0x8] ds:00cd9f51=48001500 39d2dd4c 33d2 xor edx,edx 39d2dd4e eb06 jmp QString::fromUtf8+0x90 (39d36856) 39d2dd50 8b4110 mov eax,[ecx+0x10] ds:00cd9f51=48001500 39d2dd53 8b5114 mov edx,[ecx+0x14] ds:00cd9f51=48001500 39d2dd56 56 pushesi 39d2dd57 85c0 testeax,eax 39d2dd59 740e jz QString::fromLatin1+0xb (39d36869) 39d2dd5b 8b30 mov esi,[eax] ds:007ad4d8=00858340 39d2dd5d 3b742408 cmp esi,[esp+0x8] ss:00c09513= 39d2dd61 7406 jz QString::fromLatin1+0xb (39d36869) 39d2dd63 8b4008 mov eax,[eax+0x8] ds:012873be= * Stack Back Trace * FramePtr ReturnAd Param#1 Param#2 Param#3 Param#4 Function Name 0012F664 1E057D56 089FE908 00857948 0001 088FAAD0 !QGList::findRef 0012F6C8 0001 007A5234 00779288 !PyCFunction_Call -- http://mail.python.org/mailman/listinfo/python-list
PyQt calling an external app?
What's the easiest and cleanest way of having PyQt bring up an external
application? In this case I am looking to launch Internet Explorer and
bring up a specific URL. I don't care about tracking the IE process'
activity and don't want PyQt to wait until the browser is closed. I
tried the following code from within a PyQt app:
import os
url = 'http://server.domain.com/page.html'
os.system('start %s' % url)
When I use this the PyQt app freezes up and only when I forcefully
close it does the browser window pop up. Then I looked into QThreads
and some other choices. Here's my latest attempt, using win32process:
import win32process
url='http://server.domain.com/page.html'
cmd_line = 'start %s' % url
win32process.CreateProcess(None, cmd_line, None, None,
1,win32process.CREATE_NEW_CONSOLE, None, None,
win32process.STARTUPINFO())
When I try this I get a message stating 'The system cannot find the
file specified' when the cmd_line is being interpreted. I am using
Python 2.3.5 on Windows 2000 Professional, with Qt 2.3.0 and PyQt 3.13.
Do I have to go to the lengths of implementing a QThread just to spawn
an external program I don't care about tracking?
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Re: PyQt calling an external app?
Paul Boddie wrote: What does os.startfile do when invoked with the URL? My impression was that the startfile function - available only on Windows - doesn't wait for the command to finish, but I don't run Windows and can't test this. Any feedback would be appreciated, though, since it's part of the desktop module I proposed a while back: http://www.python.org/pypi/desktop Paul Thanks! That worked perfectly. Sorry for all of the n00b questions, as I'm only about a week or two into learning Python. I had about 1+ year of experience coding in Ruby and am trying to translate a Qt app I wrote in Ruby into Python. So there are some differences in each language's Qt implementation. So far I am very impressed with Python's maturity in terms of language consistency and available libraries. Plus everyone is very responsive within the community. Thanks again! -- http://mail.python.org/mailman/listinfo/python-list
Re: PyQt Access Violations
Hope this post doesn't duplicate, as a Google Groups error happened last attempt... Phil Thompson wrote: What version of Qt? Phil It's version 2.3.0 non-commerical for Windows. My OS is Windows 2000 Professional SP4. Using this same version of Qt for a Ruby-based implementation of a similar app I didn't experience the access violation crashes when invoking the setCentralWidget() method. It's sporadic, as the crashes sometimes take 2-3 widget opens/closes to happen. Other times it takes more. Trying to debug the crashes the script never makes it past this method. Here's an excerpt from the Dr. Watson error log: function: QGList::findRef 39d2dd42 807c240800 cmp byte ptr [esp+0x8],0x0 ss:00c09513=00 39d2dd47 7407 jz QString::fromUtf8+0x8a (39d36850) FAULT -39d2dd49 8b4108 mov eax,[ecx+0x8] ds:00cd9f51=48001500 39d2dd4c 33d2 xor edx,edx 39d2dd4e eb06 jmp QString::fromUtf8+0x90 (39d36856) 39d2dd50 8b4110 mov eax,[ecx+0x10] ds:00cd9f51=48001500 39d2dd53 8b5114 mov edx,[ecx+0x14] ds:00cd9f51=48001500 39d2dd56 56 pushesi 39d2dd57 85c0 testeax,eax 39d2dd59 740e jz QString::fromLatin1+0xb (39d36869) 39d2dd5b 8b30 mov esi,[eax] ds:007ad4d8=00858340 39d2dd5d 3b742408 cmp esi,[esp+0x8] ss:00c09513= 39d2dd61 7406 jz QString::fromLatin1+0xb (39d36869) 39d2dd63 8b4008 mov eax,[eax+0x8] ds:012873be= * Stack Back Trace * FramePtr ReturnAd Param#1 Param#2 Param#3 Param#4 Function Name 0012F664 1E057D56 089FE908 00857948 0001 088FAAD0 !QGList::findRef 0012F6C8 0001 007A5234 00779288 !PyCFunction_Call -- http://mail.python.org/mailman/listinfo/python-list
PyQt Access Violations
I noticed that when I invoked the setCentralWidget() method using PyQt 3.13 on Python 2.3.5 opening and closing a widget associated with a main window would result in a Win32 access violation crash after a couple of times. Here's a generic snippet: class Application_Window(QMainWindow): def __init__(self): QMainWindow.__init__(self,None,'application main window',Qt.WDestructiveClose) def other_widget(self): self.this_widget=QWidget() self.setCentralWidget(self.this_widget) The only way I could avoid the crashes was to replace the setCentralWidget() method with: self.this_widget.show() Is there some fundamental error I was making in this, or is this a known bug? -- http://mail.python.org/mailman/listinfo/python-list
PyQt Variables
I have an application I'm writing using PyQt. I'm trying to create the various windows by subclassing Qt objects. I have a subclassed QMainWindow as the parent, and then a series of subclassed QWidgets as other child windows that get used. How can I pass variables back and forth between the parent and child windows? For example, if I have a child window that processes a customer lookup I want the retrieved values to be passed back to the QMainWindow. I have tried using global variables, but these variables seem to be global only in the sense of each subclassed object. Not between the subclassed objects. Here's a generic sample: parent_window.py = my_value = 'main' from child_window import * class Parent_Window(QMainWindow): def __init__(self): QMainWindow.__init__(self,None,'application main window',Qt.WDestructiveClose) print my_value child_window= Child_Window() self.setCentralWidget(child_window) self.catchEvent() child_window.py class Child_Window(QWidget): def __init__(self): QWidget.__init__(self) print my_value This doesn' t seem to work, as the Child_Window class doesn't recognize the my_value global variable that appears in the Parent_Window class. -- http://mail.python.org/mailman/listinfo/python-list
Re: PyQt Variables
Diez B. Roggisch wrote: Looks (or better smells) like a design smell to me. In Qt,and especially PyQt, you rarely subclass widgets, as that makes you lose the possibility to use the fabulous designer. The only thing I subclass in PyQt are the designer-generetaed top-level-classes. Can be a widget, or sometimes dialogs. QObjects usually communicate using signals/slots. That ensures a nice weak coupling of components and enforces good MVC design. If you absolutely must share state by means of instances of widgets, explicietly introduce them to each other. No globals needed! Additionally, what you experience is the fact that python only knows module-global variables. See http://www.faqs.org/docs/diveintopython/dialect_locals.html for an introduction. Regards, Diez Thanks for the reply. Makes perfect sense now that you point this out! -- http://mail.python.org/mailman/listinfo/python-list
